Diversitech vax-4 Extended Copper Tube Access Fitting

Product Description

The DIVERSITECH vax-4 is an extended copper tube access fitting designed for refrigeration system servicing. The fitting provides a low-cost, reusable access port for charging, purging, pressure checking, and quick testing on both the high and low sides of a refrigerant circuit. It ships with a quick-seal cap and a stainless and brass refrigerant valve core already included. The male flare inlet and outlet connections allow it to be installed in line or at an accessible point in the refrigerant tubing without requiring a dedicated Schrader port already present on the equipment.

This fitting is suited for residential and light commercial refrigeration and air conditioning service work. HVAC technicians and refrigeration mechanics use access fittings like the vax-4 when working on systems that lack a convenient service port, or when an additional port is needed for simultaneous gauge monitoring and charging. The fitting can be installed in any orientation on either the high-pressure or low-pressure side of the system, making it flexible for a wide range of field service scenarios.

Key Features

• 1/4 inch outside diameter extended copper tube body — compatible with standard 1/4 inch refrigerant line sizes
• 3/16 inch inside diameter for adequate refrigerant flow during service procedures
• Male flare x male flare end connections for secure, leak-resistant installation
• Includes quick-seal cap and stainless and brass refrigerant valve core
• Serviceable on both high-side and low-side of a refrigerant circuit
• Suitable for charging, purging, pressure checking, and quick testing

Compatibility

Designed as an OEM-style replacement and add-on access fitting for residential and light commercial refrigeration and air conditioning systems requiring a 1/4 inch male flare service port connection.

Installation Notes

Installation should be performed by a licensed HVAC or refrigeration technician holding the appropriate EPA Section 608 certification. Recover all system refrigerant before cutting into any refrigerant line to install this fitting. Use proper flare tools and ensure both flare connections are torqued to the fitting manufacturer's standard flare spec using calibrated tools — do not overtighten. After installation, leak-check all connections before recharging the system.

Technical Specifications

• Outside Diameter: 0.25 inches
• Inside Diameter: 0.1875 inches
• End Connection: Male Flare x Male Flare
• Tubing Style: Extended
• Material: Copper
• Valve Core Material: Stainless and Brass
• Application: Refrigeration Servicing
• Packaging Quantity: 1
• Weight: 0.364 pounds

Standard Information

• Brand: DIVERSITECH
• Manufacturer Part Number: vax-4